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    HomeWhat We DoMajor ProjectsDome Restoration Project
Dome By-The-Numbers
        
                  Dome Restoration

**12,800 inches** of cracked cast iron repaired (**8,000 inches** repaired with the "lock and stitch" and "Dutchman" techniques)
	**1,215 gallons** of paint used to repaint the Dome - 3 layers x 405 gallons each. Final top coat color is "Dome White."

**1.1 million lbs.** weight of scaffold
	**75,000+ pieces** of equipment
	**52 miles** of scaffold pipe
	**2 miles** of decking, enough to build a sidewalk **5 feet wide** x**2 miles long** from the US Capitol to the Lincoln Memorial

**5 layers** of safety netting in Rotunda
	**14,700 square feet** total Rotunda safety netting, approximately the size of seven "singles" tennis courts
	**6,100 lbs**. total weight of Rotunda nettingDome Features

**Weight**

**8,909,200 pounds** weight of Dome = approximately **4,500 tons** = about the same weight of 20 Statues of Liberty**Exterior Height**

**376 feet** height above Potomac River (includes Hill elevation)
	**288 feet** height above East Front Plaza including Statue of Freedom, is the tallest cast iron dome in world approximate height 29 story building
	**210 feet** height above East Front Plaza to the balcony used for Dome tours at Tholos
	**199 feet** height of Dome measured from Dome Skirt to Base of Freedom
	**555 feet** height of the Washington Monument is **267 feet** taller than the U.S. Capitol. Because the base of the Washington Monument is **30 feet** above sea level, and that of the Capitol is **88 feet** above sea level, the top of the Washington Monument is **209 feet** higher than the top of the Capitol Building.

**Diameter**

**135 feet** measured from exterior
	**96 feet** measured from interior**Rotunda**

**180 feet** from Rotunda floor to top of the Apotheosis; the Statue of Liberty without her base would fit with room to spare (she is **151 ft**)
	**85 feet** from Rotunda floor to first visitor gallery
	**149 feet**from the Rotunda floor to the second visitor gallery
	**20 feet** from the bottom edge of the Apotheosis to the apex at the center of the hemisphere**Windows**

**108** in Dome

	**36** windows in Cupola
		**36** windows in second story
		**36** windows in Peristyle
	**12** windows in Tholos**Iron**

**36** hollow cast-iron columns in peristyle set 10 degrees apart around 360-degree circle
	**12** columns in Tholos
	**14** over lapping cast-iron plates make up one section of the Cupola
	**3/8" to 1/2"** range of thickness of cast iron in Dome
	**5/8"** thickness of cast-iron in the Dome Skirt**Decorations**

**288 balusters** in Boiler Plate Balustrade
	**80 lbs.** approximate weight of decorative acorns
	**72** total decorative acorns****

**36** up-facing acorns
	**36** down-facing acorns
	**36** grape clusters
	**4** 300 watt "in-session" light bulbs TholosStatue of Freedom

**Weight**

**15,000 pounds** =****approximate**weight of 4** cars

**Height**

**38 feet tall** Statue of Freedom with base = approximately as high 4 story building
	**19.5 feet** statue height without pedestal
	**18.5 feet** height of pedestal**Base**

**12 wreaths** are on the base of the Statue of Freedom
	**12 fasces**, symbols of legislative authority, are above the wreaths**Headdress**

**10 lightning rod points** sit atop Freedom’s Roman inspired headdress with native American influences
          
    
    
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